1
by Haas, Alois
Published 1987
Springer Berlin Heidelberg
... have been published. Conventions as to the presentation of the data are given in the prefaces...

2
by Haas, Alois, Koschel, Dieter, Niemann, Ulrich
Published 1987
Springer Berlin Heidelberg
... for which new facts have been published. I wish to thank Prof. Dr. Dr. h. c. E. Fluck and his co-workers...